Typewriting and like machine



Nov. 5, 1940.

H. A. HEINRICH TYPEWRITING AND LIKE MACHINE Filed Sept. 25. 1938 3Smets-Sheet 1 @www NV 5, A1940- H. A. HEINRICH n TYPEWRITING AND LIKEMACHINE Filed Sept. 26, 1938 3 Sheets-Sheet 2 m n w E RH 0. TA .my Vonmm H.

Arrak/vfy Nov. 5, 1940. H. A. HEINRICH TYPEWRITING AND LIKE MACHINEFiled Sept. 26, 1938 Sheets-Sheet 5 w E M WM EY VR WM H Patented N ov.5, 1940 UNITED STATES PATENT orner-1 o f 2,220,241 l TYPEWBITING ANDLIKE MACHINE nem A. Heinrich, Middletown, conn., assigner to RemingtonRand Inc., Buffalo, N. Y., a, our..

poration of Delaware Application September 26, 1938, Serial No. 231,625

13 Claims. (Gl. 197-31) erally stated, is to provide simple and highlyeffective means of the character specied which will oifer Anoresistance' to the actuation of the type actions, thereby aifording alight touch on the printing keys.

Another object of my invention is to provide means of the characterspecified which are noiselessin their operation.

A further object of my invention is to provide such anti-rebound meanswhich may be readily combined with existing type actions withoutInodifying, or materially modifying, the existing -structural featuresthereof except to include therein features of the present invention as asubstitute for the anti-rebound devices previously employed.

To the above and other ends which will hereinafter appear, my inventionconsists in the features of construction, arrangements of'parts andcombinations of devices set forth in the following description andparticularly pointed out in the appended claims.

In the accompanying drawings wherein likereference characters indicatecorresponding parts in the diierent views:

Fig. 1 is a detail, fragmentary,'side elevation o showing a type actionequipped with the antirebound device of my invention, the view showingthe parts as they appear in normal position.

Fig. 2 is an enlarged, detail, fragmentary View of a portion of the sameshowing the parts in side elevation in the normal position.

Fig. 3 is a like View of the same blit' showing the parts in theactuated position.

Fig. 4 is an enlarged, detail, fragmentary, trans'- i maybe used intypewriting and like machines generally, wherever found available.

I have disclosed only a single type action in the accompanying drawings.that being suiiicient to arrive at an understanding of my invention inits combination therewith. Such type actions are disclosed in the patentto Going No. 1,573,544 dated Feb. 16, 1926. o 'i In the present instanceI have dispensed with the anti-rebound devices disclosedl in the patentto Going No. 1,604,640 dated Oct. 26,1926. which have been employed inRemington No. 6 and No.

Noiseless machines and have substituted therelo for the anti-reboundvention.

The type actions per se are, or may be, of t he usual construction andwill iirst be described. 1 Referring to Fig. 1 it will be observed thateach type bar I0 carries four types II, I2, I3'and I4. and is pivotallysupported on guide links I5 and I6. The lower end of the link I6 ispivoted at I'I on an arm I8 adjustably secured to a supporting bracketI9. The lower end of this link I5 isfpivoted at to a bellcrank lever 2|pivoted at 22 to the supporting bracket I9. The other arm of the lever2| is pivoted toar link 23 which in turn is devices ofthe presentinpivotally connected to a sub-lever 24 pivoted at to the bracket I9; eThe actuating means for the type bar, in the present instance, comprisesthe usual toggle members 26 and 21 pivotally united at 28. The togglemember 2'I is pivoted at '30 to bracket I9.

A- second toggle comprises an arm orvmember 3| and a pivotally connectedactuating lever 32, the arm 3| being pivoted at 33 to the member 21 ofthe iirst toggle. The lever 32 comprises two matched members xedlyunited and maintained spaced apart and arranged on opposite sides of thebracket I9, as shown inl Fig. 4. A weight or momentum accumulator 34 is,inthe present instance, nxed to and forms an extension of the togglemember 3|.

The actuating lever 32 is pivoted at 95 on the supporting bracket I9andis in the nature of a bellcrank lever having on the substantially horizontally disposed arm thereof a curved contact face 36. 'Ihls contactface is ofsuilicient width the supporting to coact with the curvedcontact edge of the sublever 24 and also to coact with a curved contactedge of a second corresponding sub-lever 31. The sub-'lever 24 has adepending link 38 pivoted thereto, which link in turn is pivoted at itslower end, as at 39,l to a key lever 4|I. In a like manner a dependinglink 38a constitutes the -connection between the sub-lever 31 and asecond key 1ever 4I.

Each key lever 40 and 4I has a returning spring which a universal-baractuating-yoke 4l is piv- 5 oted to the actuating lever 32. 'I'he spring43 is effective to return the lever 32 and the parts connected therewithto normal position. c

In the operation of the type action a depression of the key lever 4Iwill actuate the sub-lever 31 1o causing a straigh-tening of the toggles26, 21 at which time thelinks i3 and I8 will turn on their respectivepivots 20 and I1; the bellcrank 2| \at this time remaining fixed. Theeffect of this is to produce a noiseless pressure imprint from one oranother of the types I3, I4, depending on whether the platen 48 is inthe upper or lower case position.

If on the other hand the key lever 40 is depressed then the type barwill be actuated as be-` fore except that the actuation of the sub-lever24` will cause the bellcrank 2| to be shifted as shown in Fig. 3,thereby lowering the pivot 20 and causing the typebar to take adifferent path of travel to print from one of the types II, I2 dependingon the position of the platen.

I will now describe the means of my present invention which coactdirectly with a part of each type action in the return movement'thereofto normal position to prevent rebound of the parts from such normalposition of arrest.

An anti-rebound member, angular lever or device 41, preferably made ofsheet metal, is mounted to turn on a headed shouldered pivot 48 rivetedor otherwise secured to each hanger I9.

As shown in Fig. 4, the hub-like portion 41* of each member 41 is offsetlaterally from the main body portion thereof and the member as a wholeis received between the two matchingsides which go to make up theactuating lever 32. The pivot 48 is rearwardly offset from the main bodyof the member 41, so that the preponderance of weight of the member isforward of the pivot 48 and tends by gravity to turn the member 41 in ananti-clockwise direction. 'I'he depending arm of 45 the member 41 isprovided with a laterally projecting lug or contact 49 that bearsagainst the forward edge of one of thel matching side members that makeup the lever 32. The upper edge 50 of the member 41 is curved and whenthe parts 50' are in normal position as shown in Fig. 2, this curvededge corresponds substantially to an arc taken around 'the pivot 35 ofthe lever 32 as a center. A pin or.contact, 5I is riveted to one of thematched members which constitute the lever 32 and projects inwardtherefrom and normally contacts with the curved edge 50.

From the foregoing description, it will be understood that an actuationof the lever 32 by a depression of either key lever 4|), 4I to bringabout a printing movement of the associated type bar,

will cause the upright. part-of the lever 32 to move 70 ment with thepin or contact 5I.

After the printing operation and during the return of the type bar andthe parts connected therewith to the normal position of arrest, thelever 32 engaging the lug 49 will positively re- 75 turn me member 41against the force of gravity thereof. When the parts reach the normalposition of arrestfthe curved edge 50 of the antirebound device will beforced into engagement 4with the contact Il, thereby exerting a forcethat is directed lengthwise of the upright arm of the lever 32 againstitsvfixed pivot 35, thus preventing a rebound of the lever 32 and theparts controlled thereby. As the 'parts are operated from normalposition there is freedom of contact between the curved edge 50 and thepin 5I 10 and the type action is free from obstruction or resistance bythe anti-rebound device 41. This is ahihly important factor as the useof the antireboundl mean'sadds nothing whatever to the force requiredtooperate the type action, but 15 on the other hand adds the force ofgravity of the anti-rebound devicel to assist in the printing, movementof the type bar,- thereby providing a very light touch on the printingkeys. Moreover, the anti-rebound device 41 constituting the 20 onlymeans for limiting the return movementof the lever 32 and the partsconnected therewith 'there is substantially no noise produced in thearrest thereof and in the operation of the antirebound means, which isanother important fac- 25 tor.

It will be observed that the anti-rebound device 41 is in the nature ofan angular lever that has -a three-pointA engagement, one point at itspivot 48, a second point between the lug .49 and 30, y

and the contact 5| and the greater therefore will 40.

be the resistance against rebound.

It will be seen moreover, that by causing the lug 49 to engage the lever32 near the pivot of the latter that a slight movement only of theanti-rebound device is effected and that the con- 45 struction is suchthat this slight movement is 4all that is required to effectivelyprevent rebound ofthe type bar and connected parts. By maintaining aconstant and direct engagement between the lug 49 and the lever 32 nonoise is 50 produced in the operation of the anti-rebound device.

By making the anti-rebound device of a single piece mounted as shown Iam enabled to produce at little expense a highly efficient means forpur- 55 poses stated and such means may be readily added to existingtype actions without modifying, or materially modifying, the existingstructural features thereof.

While I have described in detail one form of 60 anti-rebound meansembodying my invention in its cooperation with one' form of type action,it should be understood that various changes may be made withoutdeparting from my invention as it is .defined in the accompanyingclaims. 65

What'I claim as new and desire to secure by Letters Patent is:

1. In a type action, the combination of an actuating member, a supporttherefor, a returning spring for said actuating member, and antireboundmeans for `preventing the rebound of said actuating member from theposition of arrest in its return movement to normal position, saidanti-rebound means comprising a contact on said actuating member, anengaging membei 75 movement thereof to normal position to thus move saidengaging member into engagement with said contact and arrest saidactuating member.-

2. In a type action, the combination of supporting means, an actuatingmember mounted on said supporting means, and anti-rebound means forpreventing the rebound of said actuating member from the position ofarrest in its return movement to normal position, said antirebound meanscomprising a contact on said actuating member, an engaging membermounted on'said supporting means for upward movement transversely of thedirection of movement of said actuating member into engagement with saidcontact and downward movement by gravity out of engagement therewith,and means actuated by said actuating member in the return movementthereof to normal position to thus move said engaging member intoengagement with said Contact.

3. In a type action, the combination of supporting means, an actuatingmember mountedon said supporting means, and anti-rebound means forpreventing the rebound of said actuating member from the position ofarrest in its return movement to normal position, said anti-reboundmeans comprising a contact on said actuating member, an engaging membermounted on said supporting means for movement transversely of thedirection of movement of said actuating member into engagement with saidcontact, and means actuated by said actuating member in the returnmovement thereof to normal position to 40 thus move said engaging memberinto engagement with said contact.

4. In a type action, the combination of an actuating member, a supporttherefor, a returning spring for said actuating member, and anti-reboundmeans for preventing the rebound of said actuating member from theposition of arrest in its return movement to normal position, saidanti-rebound means comprising a contact on said actuating member, anengaging member mounted on said support for movement into engagementwith said contact and for movement by gravity out of engagementtherewith, and means actuated by said actuating member in the returnmovement thereof to normal position to thus move .55 said engagingmember into engagement with said contact and arrest movement of saidactuating member under the force of said returning spring.

5. In a type action, the combination of supporting means, an actuatingmember mounted on 60 said supporting means, and anti-rebound means forpreventing the rebound of said actuating member from the position ofarrest in its return movement to normal position, said anti-reboundmeans comprising a contact on said actuating G5 member, an engagingmember mounted on said supporting means for movement upward intoengagement with said contact and downward by gravity out of engagementtherewith, and means actuated by said actuating member in the return 70movement thereof to normal position to thus move said engaging memberinto engagement with said contact.

6. The combination of a type action having a key-controlled member,supporting means T5 therefor, a returning spring for said type action,

and anti-rebound means for arresting the return movement of saidkey-controlled member to normal position comprising a stop on saidkeycontrolled member, a stop engaging member mounted on said supportingmeans for movement into engagement with said stop on the key-controlledmember and for movement by gravity out of engagement therewith, andmeans actuated by said key-controlled member in the return thereof tonormal position under the force of said returning spring to thus movesaid stop engaging member into effective engagement. with said stop onthe key-controlled member.

7. The combination of a type action having a key-controlled member,supporting means therefor, and anti-rebound means for arresting thereturn movement of said key-controlled member to normal positioncomprising a stop on said keycontrolled member, a stop engaging membermounted on said supporting means for movement transversely of thedirection of movement of said key-controlled member into engagement withsaid stop, and means actuated by said key-controlled member for thusmoving said stop engaging member into engagement with said stop,

8. The combination of a type action having a key-controlled member, asupport therefor, and

anti-rebound means for arresting the return I movement of saidkey-controlled member to normal position comprising cooperating stops onsaid key-controlled member and said support, one of said stops beingmovable transversely of the direction of movement of said key-controlledmember and into engagement with the other of said stops, and meansactuated by said key-controlled member for thus engaging said stops.

9. The combination of a type action having a key-controlled member, asupport therefor, and anti-rebound means for arresting the returnmovement of said key-controlled member to normal position comprisingcooperating stops on said key-controlled member and said support, one ofsaid stops being mounted for movement into engagement with the-other ofsaid stops, and means actuated by said key-controlled member for thusengaging said stops.

10. In a type action including a support and a pivoted member mountedthereon, the combination of a stop on said pivoted member, a stopmovable on said support in a direction substantially transversely of thedirection of movement of said pivoted member and into engagement withsaid stop on the pivoted member, and means controlled by the movement ofsaid pivoted member to normal position for thus moving said stop on thesupport into engagement with said stop on said pivoted member, wherebythe return movement of the pivoted member is arrested and the returningforce thereof is directed transversely of the pivotal axis of thepivoted member.

11. The combination of a type action including an actuating member and asupport therefor, cooperating stops on 'said actuating member and saidsupport, the stop on said support being movable substantially-transversely of the direction of movement of said actuating member andinto engagement With the stop on said actuating memberand means actuatedby said actuating mem- -ber in the return thereof to normal position tothus move the stop on said support into engagement with the stop on saidactuating member.

12. The combination of a type action including an actuating member and asupport therefor, cooperating stop means on said actuating member andsaid support, one of said stop means being movable substantiallytransversely o! 4the direction of movement of said actuating member andinto engagement with the other ot saidl stop means, and means actuatedby said actuating member in the return thereof to normal position tothus engage said cooperating stop means.

13. The combination of a type action having a support, a pivotedactuating lever on said support, and anti-rebound means for preventingrebound or said lever in the return movement.

thereof to normal position. said anti-rebound gagement with said stop onthe actuating lever. 10

HENRY A. HEINRICH.

